Patent US4588253A successfully refreshed from Google Patents.
US4588253A
Expired / Lapsed
US
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Infrared collimator
Assignee: RCA Licensing Corp
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Filing: 1984-05-23
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Granted: 1986-05-13
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Expires: 2004-05-23
Abstract
Abstract An infrared collimator uses a barrel and an infrared energy emitting source mounted at one end of the barrel. A reticle mask over the emission source produces a reticle beam pattern which is concentrated and collimated by a mirror assembly including a convex reflector mounted at a front end of the barrel and a concave concentrator with a central through bore and mounted in the barrel between the emission source and the convex reflector. The collimator produces infrared energy in a coherent, collimated beam pattern for instrument calibration and testing purposes.
Inventors
- 👤 Amber N. Brunson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:52
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/32; G02B17/00; G02B17/02; G02B17/06; G02B17/0605; G02B17/061; G02B27/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
142 words
An infrared collimator comprising: (a) a barrel housing having front and rear end portions; (b) an infrared energy emitting source mounted in the rear end portion of said barrel; (c) a mask over said source, said mask having apertures therethrough to produce a reticle beam pattern; (d) a mirror assembly including: (i) a concave concentrator having a central through bore and mounted coaxially in said barrel; and (ii) a convex reflector mounted coaxially in said barrel and sized approximately equal to said through bore; (e) whereby infrared energy in said reticle beam pattern is reflected respectively by said concave concentrator and said convex reflector and directed outwardly in a coherent, collimated beam through said barrel; (f) said source being an automatic temperature controlling unit having a resistance heated surface plate maintained at an adjustable differential with respect to a second reference temperature.
Claim 2
Dependent Claim
142 words
An infrared collimator comprising: (a) a barrel housing having front and rear end portions; (b) an infrared energy emitting source mounted in the rear end portion of said barrel; (c) a mask over said source, said mask having apertures therethrough to produce a reticle beam pattern; (d) a mirror assembly including: (i) a concave concentrator having a central through bore and mounted coaxially in said barrel; and (ii) a convex reflector mounted coaxially in said barrel and sized approximately equal to said through bore; (e) whereby infrared energy in said reticle beam pattern is reflected respectively by said concave concentrator and said convex reflector and directed outwardly in a coherent, collimated beam through said barrel; (f) said source being an automatic temperature controlling unit having a resistance heated surface plate maintained at an adjustable differential with respect to a second reference temperature.
Claim 3
Dependent Claim
31 words
The infrared collimator set forth in claim 1 including: (a) a remote temperature display unit providing a readout of the temperature differential between said surface plate and said second reference temperature.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |